Ben Hansen once climbed into a cage, then stared great white sharks in the eye as the cage was lowered into the water. "I thought that if I could do that . . . I could do anything in life," Hansen later said. That experience, daring though it may have been, wasn't the scariest thing he has ever had to do. It took him four more years to get up the courage to make the ultimate committment—buying an engagement ring.
